Well pump



4311.119304 QHBERG'QUIST v 1,742,802

WELL PUMP Filed Dec. 31. 1926 2 Sheets-Sheet l Jan. 7, 1930. c. HfBERGQUls-r 1,742,802

WELL PUMP Filed Dec. 31. 1926 2 Sheets-Sheet 2 Hll 'Mu/.lt

Patented Jan. `7, 1,930

CHARLES H. BERGQUIST, F OKMULGEE,

OKLAHOMA, ASSIGNOR OF ONE-HALF T0 EMERY AQLOCKE, or OKMULGEE, OKLAHOMA WELL PUMP Application mea December 31, 192e. serial 110,158,271.`

' i This invention relates to pumpsespecially adapted for use in oil wellsalthough not restricted to such use.

Briefly stated an important object is to provide means whereby a lifting medium such as compressed air or'gas may be brought into lifting relation 'to the oil in a well to bring the oil to the surface in a highly 'eco-l nomical and eflicient manner and without in any way eXerting a restraining iniuenceon the oil in the producing stratum whereby increased production is made possible.

Afurther and equally/important object is to provide an oil well pump having reliable means whereby the lifting medium is automatically controlled by the level of the oil in the hole so that when the levelof the oil rises above a predetermined point the lifting medium will function and will cease to function when the level of theoil in the hole drops below a predetermined point.

Another and vitally important objectof the invention-is to provide for the conservation of the lifting medium, be it compressed air orgas, so that a single compressor may be automatic operation will require little attention and which by reason of employment of many standard parts and comparatively few special parts may be manufactured at a comparatively low cost. The employment of a compressed lifting 40.

same avoids the necessity of employing sucker rods and associated equipment known to be troublesome and costlyin' wells :for reasons fully appreciated by those skilled in the art.- 'Other objects Aand description. Q A i In the accompanying drawings forming a .50` pai-ggf this,applicationu and .in which/like medium and the manner of-'controlling the advantages will be ap-J parent during the course of the followingnumerals areemployed to designate like parts throughout the same.

- Figure 1 is a side installed in a well.

Figure 2 isa vertical sectional view through a-valve head and associated parts.

Figure 3 is a vertical sectional view through the conductors for the lifting and lifted fluids andthe means by which the movement V-of the lifting medium is controlled by the level of the oil inthe casing.

Figure 4 is a vertical sectional view through the lower portion of the pump.

In the drawing wherein for the purpose of illustration is shown a preferred embodiment of the invention the numeral 5` designates an elevation of the pump Y outer tubing or fluid conduit having the lower portion thereof provided with a coupling 6` to whichthe valve head 7 is threadedly connected.

`Figure 2 clearly illustrates that the valve head has the lower portion thereof in threaded engagement with a cylinder or oil receiver 8.v Attention is now invited to Figure 4 which illustrates that the lower portion of the cylinder or oil receiver 8 is connected to a yswedge nipple 9 through the mediumof Va coupling 10. An anchor or inlet member 11 of conventional or other design is suspended from the lower portion of the nipple 9 and may be perforated or otherwise formed toprovide for the easy iiow of the oil into the cylinder or oil receiver 8 fromthe producing formation.

Figure 4 illustrates that' a! standing valve 12 is located at or adjacent the lower portion of the swedge lnipple 9 and allows of the movement of the oil from the sands into the oil receiver. It is important to note that the standing valve positively prevents compressed fluid, be it air or gas, within the oil' receiver or any other part of the pump from exerting a restraining influence on the oil in the producing stratum. Herein lies one of the most important features of the invention. Consideration of Figure 2 will reveal that a tubular member 16 is threaded into the lower portion of the valve head-7 in alignment withv and in open communication with the bore of the same so that oil or other fluid may pass upwardly through the tube. 16, the bore of the valve head and an inner fluid conduit 18 immediately above. At this point it is noted that the lower end of the inner fluid conduit 18 may have a luid tight connection with the valve head by a lead sealing ring 20 or by vany other means found satisfactory. However, the provision of the lead sealing ring 20 makes 1t possible to lower the, inner fluid conduit 18 down through the outer tubing or fluidconduit 5 so that the especially beveled lower end of the same may be brought into sealing engagement with the head Y. U

The annular reservoir or oil receiving chamber formed by the members 8 and 16 may be of a length found best suited to conditions and the productivity of the well ,and the supply of a lifting fluid such as compressed air or gas to this annular reservoir V1s controlled by a valve consisting of spaced pistons 30 and 31 rigidly mounted on av piston rod 32, to the lower end of which a yoke 34 1s 4 pivoted. Figure 2 admirably illustrates that the yoke 34 extends about the tube 16 and is fulcrumed to the lower portion of a bracket 36. Y

The yoke 34 which extends about the tube 16 has pivotal connection at one end thereoi` with a link 37 the lower portion of which is connected to a second yoke 39. The second yoke 39 extends about the lower portion of the tubing and is pivoted to a bracket 42 eX- tending up from a sectional lclamp 44 which embraces the tube 16.

Figure 3 illustrates that an annular lioat 50 is located in the annular reservoir between the yokes 34 and 39 and is adaptedto engage these yokes to either open or close. the valve consisting of the pistons 30 and 31. It is believed to be clear that as the level of the oil within the lreservoir drops the float supported by the oil will descend until it comes into operative engagement with the yoke 39. The float when not supported by the oil moves the yoke 39 downwardly on its pivot with the result that the link 37 is moved downwardly.

When the link 37 is thus moved downwardly the yoke 34 will be moved on its fulcrum so that the valve controlling thel admission of the lifting medium to the reservoir will be mechanically closed.

On the'other hand as the level of the oil rises within the annular reservoir the float will approach and finally engage the upper yoke 34 so that the same is caused to move the valve to open position whereby the supply of the lifting fluid such as compressed air or gas is automatically resumed. Particular at-V tention is directed to the fact that the annular float 50 is formed with a longitudinal channel or recess to freely receive the link 37. Also itrwill be seen with reference to Figure 2 that the cross sectional area of the iioat 50 is sufciently less than the cross sectional area of the annular reservoir to permit of the easy movement of the float.

Coming now to the description of the main controlling valve attention is invited to Fig-V ure 2 which illustrates that the pistons 30 and 31 operate within a valve chest 60 having inlet and outlet ports 62 and 64 respectively. When the pistons 30 and 31 are raised to cut oi' the supply of the lifting medium to the reservoir the port 62 will remain uncovered so that equal pressure will be exerted on the opposed sides of. the pistons 30 and 31. This avoids any likelihood of accidental movement oitl the pistons 30 and 31 from the positions to which the same have been moved.

When the piston 31 is in an elevated position it not only cuts oil' the supply of additional lifting fluid to the annular reservoir, but permits the pressure in the reservoir to be relieved. In explainingthis it is pointed out that when the piston 31 is in its elevated position the compressed air or gas in the annular reservoir below may be relieved through a passage 68, the port 64, the lower portion of the chest and a vent hole 70. The presence of compressed air-or gas in the annular reservoir after the cessation of the pumping operation would prevent or at least retard the flow of oil from the producing sands into the annular reservoirfrom where it may be pumped in the subsequent operation of the invention.

Figure 2 illustrates that the upper portion of the chest 60 is provided with a vent hole 7 4 by which the Icompression of fluid above the piston 30 is avoided. Incidentally the port has the same function.

In the operation ofthe invention compressed air or gas is supplied to the tubing 5 by a compressor and the movement of this compressed air to the annular reservoir delined by the members Sand 16 is controlled by the float operated valve consisting of the pistons 30 and 31. As the compressed air or gas enters the annular oil reservoirl the oil in the reservoir will be directed up into the tube 16 through the' valve 26. The rapid flow of oil or the like into the tubing will create aV suction or vacuum suilicientlystrong to draw additional oil into the oil reservoir from the producing formation.

A pump constructed in accordance with this invention is especially valuable for use in wells where the oil admitted thereto contains sand so destructive to the plungers, valves, working barrels and other parts of pumps having reciprocating devices. The pump may also be employed in mines and elsewhere tofraise water. v

This invention may be easily adapted to standard equipment and may be operated b those of limited intelligence since the starting and stopping of the pumping operation is automatically provided for. In thisconnec tion it is observed that the employment of a single compressor will suilice for a number of a shallow wells and by reason of the construe` tion and arrangement herein disclosed a lower pressure with reduced wear on the machinery is sufiicient for the profitable pumping ofthe wells.

It is to be understood that the form of invention herewith shown and described is to be taken merely as a preferred example of the same and that such minor changes in arrangement and construction of parts may be made as will remain within the scope of what is claimed.

Having thus described the invention, what is claimed is l. In a pump, the combination of inner and outer spaced tubular members forming an annular fluid and float receiving chamber, a valve head connected to said tubular members and having a chest provided with communicating inlet and outlet ports for a lifting medium, the outlet port having communication with said chamber to supply a lifting medium thereto, a valve having spaced pistons controlling said ports, separate yokes. extending about said inner tubular member,

a link connecting said yokes, means connecting said valve and one of said yokes, and an annular float movable between said yokes and adapted to separately and directly engage the same, there being liquid inlet and outlet means communicating with said chamber.

2. In a pump, the combination of inner and outer spaced tubular members forming an annular fluid and float receiving chamber, a valve head connected to said tubular members and khaving a chest provided with communicating inlet and outlet ports for a lifting medium, the outlet port having communication with said chamber to supply a lifting medium thereto, a valve having spaced pistons controlling said ports, separate yokes extending about said inner tubular member,

a link connecting said yokes, means connecting said valve and one of said yokes, an annular float movable between .said yokes and adapted to separately and directly engage the same, there being liquid inlet and outlet means communicating with said chamber, said chest having a relief port controlled by said valve.

8. In a fluid lift, inner and outer tubular members arranged in spaced relation to define an annular chamber, a valve controlling the admission of a lifting fluid to said chamber, there being exhaust means for the lifting fluid in said chamber, upper and lower spaced pivotally mounted operating levers within said chamber, a link connecting the levers for movement together, means connecting one of the levers to said valve, a float movable between said levers and adapted to operate the same to control said valve and the admission of a lifting fluid to said chamber, said inner tubular member having fluid conducting means communicating with said chamber, and a valve controlling said fluid conducting means, there being an inlet i for the fluid being elevated.

4. In a pump, inner and outer spaced 'tubular members defininor an annular oil receiving cha ber, said chamtber being provided with means for the inlet and outlet of liquid, a valve head connected to said inner and outer tubular members and being provided with a chest having inlet and outlet ports for communication with said chamber and adaptable for the passage of a lifting medium, a valve to control said ports, a yoke having connection with said valve, a second yoke below the first named yoke, a clamp embracing said inner tubular members and having a bracket pivotally supporting the second yoke, a link pivotally connecting the yokes for movement together, an annular float movable between f said yokes to operate the same, the crosssectional area of said float being less than the cross-sectional area of said chamber, and a valve controlling the admission of oil to said chamber.

5. In a pump, inner and outer spaced tubular members defining an oil and float receiving chamber having inlet and outlet means for liquid, a valve head having a chest provided with inlet and outlet ports for communication with said chamber and adapted for the passage of a lifting medium, a valve consisting of spaced pistons in said chest and adapted to control said ports, said valve also having a rod, a yoke connected to said rod, a second yoke below the first named yoke and extending above said inner tubular member, a clamp embracing said inner tubular member and having a bracket pivotally supporting the second yoke, a link connecting the yokes, and an annular float between said yokes to operate the same.

6. In a pump, inner and outer spaced tubular members defining an annular oil receiving chamber and provided with an inlet and an outlet for a liquid, a valve head having a chest provided with ports for a lifting medium and adapted for communication with said chamber, a valve consisting of spaced pistons in said chest and adapted to control said ports, said valve also having a rod, a yoke connected to said rod, a second yoke arranged below the first named yoke and extending about said inner tubular member, a clamp embracing said inner tubular member and having means pivotally support- CHARLES H. Bancomer. 

